[PATCH 14/15] cxl/aer/pci: Export pci_aer_unmask_internal_errors()

Terry Bowman
2024-10-08T22:19:43Z

The CXL driver needs to enable AER correctable and uncorrectable internal
errors in order to receive notification of protocol
errors. pci_aer_unmask_internal_errors() is currently defined as
'static' in the AER service driver.

Update the AER service driver, exporting pci_aer_unmask_internal_errors()
to CXL namespace.

Signed-off-by: Terry Bowman <terry.bowman@amd.com>
---
drivers/pci/pcie/aer.c | 6 ++++--
include/linux/aer.h | 2 ++
2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index 81a19028c4e7..1b4004932084 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -962,7 +962,6 @@ static bool is_internal_error(struct aer_err_info *info)
return info->status & PCI_ERR_UNC_INTN;
}

-#ifdef CONFIG_PCIEAER_CXL
/**
* pci_aer_unmask_internal_errors - unmask internal errors
* @dev: pointer to the pcie_dev data structure
@@ -973,7 +972,7 @@ static bool is_internal_error(struct aer_err_info *info)
* Note: AER must be enabled and supported by the device which must be
* checked in advance, e.g. with pcie_aer_is_native().
*/
-static void pci_aer_unmask_internal_errors(struct pci_dev *dev)
+void pci_aer_unmask_internal_errors(struct pci_dev *dev)
{
int aer = dev->aer_cap;
u32 mask;
@@ -986,6 +985,9 @@ static void pci_aer_unmask_internal_errors(struct pci_dev *dev)
mask &= ~PCI_ERR_COR_INTERNAL;
pci_write_config_dword(dev, aer + PCI_ERR_COR_MASK, mask);
}
+EXPORT_SYMBOL_NS_GPL(pci_aer_unmask_internal_errors, CXL);
+
+#ifdef CONFIG_PCIEAER_CXL

static bool is_cxl_mem_dev(struct pci_dev *dev)
{
diff --git a/include/linux/aer.h b/include/linux/aer.h
index 67fd04c5ae2b..c43d2b60b992 100644
--- a/include/linux/aer.h
+++ b/include/linux/aer.h
@@ -69,5 +69,7 @@ struct cxl_port_err_hndlrs {
void register_cxl_port_hndlrs(struct cxl_port_err_hndlrs *_cxl_port_hndlrs);
void unregister_cxl_port_hndlrs(void);
struct cxl_port_err_hndlrs *find_cxl_port_hndlrs(void);
+
+void pci_aer_unmask_internal_errors(struct pci_dev *dev);
#endif //_AER_H_

--
2.34.1